A previously unknown stretch, or strand, of the fault is actively moving about a tenth of an inch per year as it runs beneath residential neighborhoods in the Ygnacio Valley. "Many of the ...

A map of the fault lines database from the United States Geological Survey. USGS. The USGS has a faults website that includes an interactive fault map that allows users to views a map of the U.S ...

Hundreds of millions of people across the U.S. live in areas prone to damaging earthquakes, a new map from the U.S. Geological Survey shows.

A map displays the likelihood of damaging earthquake shaking in Alaska. USGS. In the last two centuries, 37 states have seen an abundance of magnitude 5 earthquakes, according to the study.

SAN DIEGO (CNS) - Maps released Thursday of earthquake-prone areas are intended to ensure new construction in San Diego does not take place atop earthquake faults that may break the surface.

A geological fault is (in geology) a planar fracture or discontinuity in a volume of rock, across which there has been ...

A group of fault lines sit underground near Van Horn, Texas, dating up to 1.6 million years old, according to a map published by the U.S. Geological Survey (USGS) While the fault lines might have ...

The Bay Area fault system and the spot (red star) where the Hayward Fault branches off from the Calaveras Fault. The white lines indicate faults recognized by the USGS. The red line is the newly ...